Yeah, fear of planted drugs in my lugage when I travel to corrupt countries with death penalty/very hard prison conditions for drug smugling. Recurrent nightmare of mine.
Interestingly, whenever I enter and leave Thailand, there is no visible customs presence whatsoever - you literally walk right out of the airport. Not only is there no customs line, or desk, or personnel, you don't even fill out a customs card on the plane anymore.
By contrast the last several times I entered the Bad Place (through LAX) a vicious drug sniffing dog was aimed at my crotch every time, as we were herded like convicts, and twice my bag was searched by the customs troopers. And I think 'very hard prison conditions' are a given in our dear old homeland as well.
Believe me, corrupt countries are soooooooo much better than the Land of the Free.
